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4!' <br /> SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> Method 8020A-** 81380 INTERCHANGE DRIVE <br /> HOUSTON. TEXAS 77054 <br /> Matrix_ Aqueous Batch id: VARD980713124800 PHONE{713)660.0901 <br /> Units. ug/L <br /> L A B O R A T O R Y C ONTROL SAM PLE <br /> S P I K E Method Spike Blank Spike QC Limits(..) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> t $ Recovery Range <br /> MTBE ND 50 45 90.0 72 - 128 <br /> Benzene ND 50 46 92.0 61 - 119 <br /> Toluene ND 50 46 92.0 65 - 125 <br /> EthylBenzene ND 50 46 92.0 70 - 118 <br /> 0 Xylene ND 50 45 90.0 72 - 117 <br /> M & P Xylene ND 100 90 90.0 72 - 116 <br /> M A T R I X S P I K E S <br /> S P I K E Sample Spike Matrix Spike Matrix Spike MS/MSD QC Limits(...I <br /> C O M P O U N D S Results Added _ Duplicate Relative '; (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE ND 20 19 95.0 33 165 * 53.8 20 39 - 150 <br /> BENZENE <br /> NII 20 17 85.0 18 90.0 5.71 21 32 - 164 <br /> OLUENE ND 20 18 90.0 18 90.0 0 20 38 - 159 <br /> HYLBENZENE ND 20 18 90.0 113 90.0 0 19 52 - 142 <br /> 0 XYLENEND 20 17 85.0 17 85.0 0 18 53 - 143 <br /> M & P XYLENE ND 40 1 35 87.5 34 85.0 2.90 17 53 - 144 <br /> * Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: LJ Data outside Method Specification limits. <br /> Sequence Date: 07/13/98 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9807294-01A ND = Not Detected/Below Detection Limit <br /> Sample File ID: D_G2012.TX0 I Recovery = [( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS I Recovery = (<1> / <3> ► x 100 <br /> Blank Spike File TD: D_G200S.TXO Relative Percent Difference a 1 (<4> - <5> / [I<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: D_G2007.TXO f*') Source: SPL-Houston Historical Data (1ST 0 197) <br /> Matrix Spike Duplicate File ID: D_G2008.TX0 (•**) = Source: SPL--Houston Historical Data {1ST Q 197) <br /> SAMPLES IN HATCH(SPL,.ID) r 9807272-02A 9807272-03A 9807272-04A 9807272-08A <br /> 9807272-09A 9807294-03A 9807294-04A 9807294-OSA <br /> 9607294-06A 9807294-07A 9807190-02A 9807221-04A <br /> 9807221-OSA 9807294-01A 9807294-02A 9807220-04A <br /> 9807272-OIA <br />